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Application Security Engineer (Contract)
Company Wikimedia Foundation
Location San Francisco, CA or Remote
Preferred GIAC Certifications gpen, gwapt or gweb
Travel 0%
Salary TBD
Contact Name Wikimedia Recruiting
Contact Email recruiting/at/
Expires 2019-12-24

Job Description

Location: Remote or San Francisco

Hours: 40 hours

Contract Length: Until end of June (6+ months)


The Wikimedia Foundation is looking for an Application Security Engineer to join the Security team working to help protect Wikipedia and our other projects. You'll be working with other developers and security engineers to create new security features, review the security of other people's code, and help find and fix security bugs before they're exploited.

YOU ARE ...a smart security practitioner with experience building and auditing security features in large scale systems. You understand the importance of testing and documentation, and common pitfalls in developing secure web applications. You must have a passion for the WMF mission. We do (almost) everything publicly, and volunteers can add arbitrary JavaScript to our site.

You will be joining a team responsible for ensuring the security and integrity of applications written in PHP, Python, Ruby, Lua, Perl, JavaScript (Node.js) among others, using both relational and key-value data storage mechanisms. (Don't worry, you don't need to have had experience with all of those technologies.)

You are responsible for:

Triaging and remediating reported security issues
Reviewing and deploying features developed by the Foundation and community members
Working with other development teams to ensure that they make safe architectural and implementation choices
Constantly poking and abusing our software to find bugs before attackers do
Providing application security concept reviews and help socialize application security best practice
Providing support for application security operations

Skills and Experience:

The right person is better than the right set of experiences, these are the traits we’ve identified make great additions to our team so far.

Two or more years of application security experience, including thorough understanding of issues documented in the OWASP Top Ten and CWE Top 25
Strong understanding of modern, object-oriented PHP development
Demonstrated ability to exploit and mitigate application-level vulnerabilities
Experience conducting software security reviews using a combination of source code inspection, manual testing, and automated scanning
Patience in explaining security issues and their implications on privacy to non-technical audiences
Sensitivity to the security challenges faced by participants in a large, international project
Strong understanding of cryptography as applied to web application security (encryption, hashing, PKI management), including analysis and implementation
Experience using Linux/Unix at the command line for tasks related to web application development and deployment
Ability to maintain focus when working remotely

Additionally, we’d love it if you have:

In addition to the basic skills needed for being successful these skills could set you apart from the pack!

Experience as a contributor in the Wikipedia or Wikimedia project communities
Experience contributing to a consensus-based open source project
Experience developing, maintaining, or administering authentication systems
In-depth experience developing or auditing client-side JavaScript

The Wikimedia Foundation is... 

...the nonprofit organization that hosts and operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge, free of interference. We host the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive. The Wikimedia Foundation is a charitable, not-for-profit organization that relies on donations. We receive financial support from millions of individuals around the world, with an average donation of about $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.

The Wikimedia Foundation is an equal opportunity employer, and we encourage people with a diverse range of backgrounds to apply.